The Shih Tzu (traitional Chinese: 獅子狗; simplified Chinese: 狮子狗; pinyin: Shīzi Gǒu; Wade-Giles: Shih-tzu Kou; literally "Lion Dog"), in English pronounced [ˈʃiːtsuː] "shee tsoo"), is a dog breed which originated in China. The name is both singular and plural. The spelling "Shih Tzu", most commonly used for the breed, is according to the Wade-Giles system of romanization. The Shih Tzu is reported to be the oldest and smallest of the Tibetan holy dogs, its vaguely lion-like look being associated with the Snowlion. It is also often known as the "Xi Shi quan" (西施犬), based on the name of Xi Shi, regarded as the most beautiful woman of ancient China, and, less often, the Chrysanthemum Dog, because its face looks very much like the flower, and the Chinese or Tibetan Lion Dog.